I like this and don't think the labels are an issue, but really the labelling should include brail, how else will blind people operate this generator?
But seriously, nice. A cable patch between blocks would be a nice touch, allowing reconfiguration on the fly. I have a friend here in Perth that designs and sells analog synths, I should explore combining his works with lasers.... Food for thought.
Here are some of his creations. "Non-Linear Circuits". I have produced laser shows for/at his performances, totally wicked.
Laserist - build a bridge. Life is short.